Is it rather difficult to replace a regular garden tub with a jacuzzi tub? I would love to have a jacuzzi in my master but don't know how difficult it would be to replace my regular tub with a jacuzzi. Has anybody done this?

It is no harder to install a jetted tub than any other tub. Except you have to have an electrical connection for the pump, which has to be GFI for safety. When purchasing the tub make sure to get an air switch this way you can turn the jets on and off while in the tub.